Author: mav Date: Tue Oct 11 16:49:16 2016 New Revision: 307055 URL: https://svnweb.freebsd.org/changeset/base/307055
Log: MFC r305198: MFV r302647: 6922 Emit ESC_ZFS_VDEV_REMOVE_AUX after removing an aux device illumos/illumos-gate@63364b0ee2604783e7a55f8425888867768eafa4 https://github.com/illumos/illumos-gate/commit/63364b0ee2604783e7a55f84258888677 68eafa4 https://www.illumos.org/issues/6922 ZFS does not do a config_sync after removing an aux (spare, log, or cache) device. AFAICT this isn't being done because it is slow and was deemed unnecessary. However, it should be such a rare operation that speed doesn't matter, and not doing it results in two problems: 1) It is theoretically possible to remove an aux device from one pool and attach it to another, then lose power. When power is restored, both pools woul d think that they own the aux device. 2) Removal of the aux device doesn't send any useful sysevents to userland. Reviewed by: George Wilson <george.wil...@delphix.com> Reviewed by: Matthew Ahrens <mahr...@delphix.com> Approved by: Dan McDonald <dan...@omniti.com> Author: Alan Somers <asom...@gmail.com> Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c stable/10/sys/cddl/contrib/opensolaris/uts/common/sys/sysevent/eventdefs.h Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c ============================================================================== --- stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c Tue Oct 11 16:48:12 2016 (r307054) +++ stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c Tue Oct 11 16:49:16 2016 (r307055) @@ -5680,6 +5680,7 @@ spa_vdev_remove(spa_t *spa, uint64_t gui } else { error = SET_ERROR(EBUSY); } + spa_event_notify(spa, vd, ESC_ZFS_VDEV_REMOVE_AUX); } else if (spa->spa_l2cache.sav_vdevs != NULL && nvlist_lookup_nvlist_array(spa->spa_l2cache.sav_config, ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0 && @@ -5691,6 +5692,7 @@ spa_vdev_remove(spa_t *spa, uint64_t gui ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache, nv); spa_load_l2cache(spa); spa->spa_l2cache.sav_sync = B_TRUE; + spa_event_notify(spa, vd, ESC_ZFS_VDEV_REMOVE_AUX); } else if (vd != NULL && vd->vdev_islog) { ASSERT(!locked); ASSERT(vd == vd->vdev_top); @@ -5729,6 +5731,7 @@ spa_vdev_remove(spa_t *spa, uint64_t gui */ spa_vdev_remove_from_namespace(spa, vd); + spa_event_notify(spa, vd, ESC_ZFS_VDEV_REMOVE_DEV); } else if (vd != NULL) { /* * Normal vdevs cannot be removed (yet). @@ -5742,7 +5745,7 @@ spa_vdev_remove(spa_t *spa, uint64_t gui } if (!locked) - return (spa_vdev_exit(spa, NULL, txg, error)); + error = spa_vdev_exit(spa, NULL, txg, error); return (error); } Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/sys/sysevent/eventdefs.h ============================================================================== --- stable/10/sys/cddl/contrib/opensolaris/uts/common/sys/sysevent/eventdefs.h Tue Oct 11 16:48:12 2016 (r307054) +++ stable/10/sys/cddl/contrib/opensolaris/uts/common/sys/sysevent/eventdefs.h Tue Oct 11 16:49:16 2016 (r307055) @@ -249,6 +249,8 @@ extern "C" { #define ESC_ZFS_RESILVER_START "ESC_ZFS_resilver_start" #define ESC_ZFS_RESILVER_FINISH "ESC_ZFS_resilver_finish" #define ESC_ZFS_VDEV_REMOVE "ESC_ZFS_vdev_remove" +#define ESC_ZFS_VDEV_REMOVE_AUX "ESC_ZFS_vdev_remove_aux" +#define ESC_ZFS_VDEV_REMOVE_DEV "ESC_ZFS_vdev_remove_dev" #define ESC_ZFS_POOL_CREATE "ESC_ZFS_pool_create" #define ESC_ZFS_POOL_DESTROY "ESC_ZFS_pool_destroy" #define ESC_ZFS_POOL_IMPORT "ESC_ZFS_pool_import" _______________________________________________ svn-src-stable-10@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-stable-10 To unsubscribe, send any mail to "svn-src-stable-10-unsubscr...@freebsd.org"
